Machine for shaping metal tubes



Nov. 22, 1932. N 1,888,807

MAC HI NE FOR SHAPING METAL TUBES Filed March 18, 1932 llllr lllllllINVENTOR 71110 .Z Rivers ATTORNEY Patented Nov. 1932 ZFMZIES RIVER GEFABMINGDA'L'E, NEW 'Zfilltl'fi, ASSIGNQR Til THE AVIATION PATENT ANDCORPOBATKQN', A QQRPQFATIQN F HEW YORK insomn non snnnine meet someimplication filed March is, 19352. serial its 599,883.

This invention relates to an improvementin an apparatus ion compressinglight metal tubing into predeterminecl shape for use as frame chordmembers in airplane wing ribs.

Heretofore there has been no apparatus provided for shaping tubing intothe desirecl dimensions wherein it Wes possible to adj ist the apparatusto secure e; given dimension with any degree of accuracy,

it is therefore an object of this invention to provide an apparatus forreadily changing circular tubes of light metal by compression intotubing of any predetermined crosssection whether ovel or suhstentisilyso, within a given predetermined range, and further to provide anapparatus that wiil prevent the tubing, matter it has en flattened intothe clesireti she e, iromhenriingfl -l /ith the ioregoingisntl otherobjects in View the invention consists in the combinetion of parts andin details construction hereinafter set forth in the ioiioving specii'iee'tion end enpenclecl cleiincertein einhocli--- inents being"illustrates in the accompanying sire-Wing, in which: I

iiiigure 1 is e vievv in sicle elevation showing two apparatusesoperating ii'i-SQIlES and the trough for receiving; the flattenedtubing;

Figure 2 is a view in eievetion portly in section showing oppositelyrotating Figure 3 is it view in si-rle eievetion; encl Figure is s viewin section token along the line of Figure 2.

Referring more particularly to the drewing, the particular cleviceclescrihexi herein in connection with the invention consists of s framemember 1 in which may he mounted en exie 4 on hearings 1-722, @n axleendl rigidly ettschei thereto Within the supporting sides of framemember 1, is o roller mom her 3 encl Without the frame inemher 1 s beltWheei 6 encl e geer 5 all of which'ere constnucteel to he roteteci in eclockwise direction upon .e rotstive force being applied to the heltwheei 6. Upon frame member 1 many he mountetl sn adjustable frame member8, "which many he reise i or lowerecl in relation to the stationeryframe mernloer 1 lay the manipu, lotion of the heml wheel to operate thescrew '9, to the lower encl of which the frame member 8 is ettncheiuThis action takes place against the operation of compression springs 21which ten ol to stabilize adjustments made the device end throw theupper roller out of engagement with. the lower roller sndl fiisengegegear 16 iiron'i gear 5 so as to stop the tube compressing operation incase of e stripping of the ecliustment screw encl consequent faultyecliustment. The

screw 9* is meshecl with e nut ll set rigidly in the upper pert of framemember 1. On frame member 8 on hearings 13 and 13a and directly aboveheerings encl 7o may be mounted an axle il, to which. is rigidlyatteched roller member 15 Within the supportine" sides of items membersi and 8 Without the sicles of "frame members i. the gene lit The rollermemnntl i5 hnve opposed. GGIlCSLVG stir-feces with shoulders 3 encl 15"which iette'r shut on ere suhstontielly so releted no all times that thespecs loetvveen the conceve roller is such to proviele ion the clesirecisuhstentieiiy ovel shspe oi the finished ironic chore tubing. The rollermonitor 3 may hove en ontei' iienge 17 and lieeither side, which willoperate as e guide for the shonltlers iii of the roiler l5 nntl preventlateral displacement of the rolier inernher 15 during the operation. The,euxiliery roller members 18 and 18s may he ettscheal to the dischargingentl of the device to set as e support for the iinishetii ovel tubino. Asupporting trou h 19 may he sttecheri to the an eretus at t e pointWhere thefinishetl tuioing leaves the auxiliary rollers 18 and 18s, andon the same plane to receive sniii flattened tubing and preventlengthwise bending thereof.

The genes 5 end 16 are equipped with teeth of longer than usuel length.Thus the o seating range of the device is between t e point Where thegears encl 16 mesh and the point of contact of the roller memhersB and15.

The screw 9, when turned to the right, lowers the adjustable iii-sine 8and engages the gear 16 with the gear 5 and 'iorin' s the rollermembers-15 end 3 substantially into contact.

2 aeeaeor A force applied to the belt wheel 6 will rotate gear '5 androller 3 in a clockwise direction and cause the ear 16, when meshed, torotate in a counter-c ockvvise direction, which will till in turn causeroller member 15 to rotate in a counter-clockwise direction. The tubingbetween the roller members 3 and 15 will be flattened to the desiredpredetermined shape as it is-bein drawn through the said roller membersan forced between the supporting roller members 18 and 18a to thesupporting trough 19.

A suitable scale (not sbown) may be rovided so that the turning of thehandw eel may obtain a precision adjustment of the ace between thecompressing rollers and t e consequent tubing of predetermined gauge. sThe showin in Figure 1 merely represents the possi ility out compressingthe tube in two stages in case it may be found desirable in asubstantial alteration of the tube from its normal circularcross-section.

I claim:

A device for compressing and shaping tubes including two roller membershaving ogposed concave surfaces, and substantially a utting shoulders,means for rotating said roller members in opposite directions and asingle means for adjusting and maintaining the operating position of oneof said roller members with respect to the other,. one of said rollermembers having circular flanges at either end to engage and maintain thealignment of the shoulders of the other roller member, said adjustmentmeans comprising a resilient means tending to separate saidrollermembers and a manual adjustment member operable against the actionof said resilient means, the latter being adapted to retain the devicein each of its various adjusted positions and to force said rollermembers out of contact with each other and disengage the means forrotating said adjustable roller member upon the breakage or failure ofsaid manual adjustment member rendering the latter incapable ofovercoming the resistance of said resilient member.

In testimony whereof, l have signed my name to this specification this14th day of March, 1932.

ELMER JAMES RWERS,

